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Date of Publication:2012-01-01

Journal:环境科学学报

Issue:7

Page Number:1785-1792

ISSN No.:0253-2468

Abstract:Cement production has received increasing attention due to its high consumption of energy and resource.Life cycle assessment（LCA） is an effective tool for cleaner production audits.We constructed LCA model to quantify emissions and resource consumption in each phase of the cement production process for a cement plant in Dalian.We evaluated the environmental impact caused by materials mining,transportation,raw material preparation,clinker calcination and finish grinding and mixing,which are general processes that are involved in cement materials production and transportation.Cradle-to-grave analysis was performed using the GaBi4 software with CML 2001 Dec 07 by which global warming,human toxicity and acidification potential influence was analyzed and compared.Result shows that during the whole lifetime of cement production,clinker calcination could cause the most important impact to the environment in terms of carbon dioxide discharging and smog generation,etc.Furthermore,clinker calcination is also ranked the first place in energy consumption.According to the result of LCA analysis,the focus of cleaner production audit and the cleaner production plan were put forward.In addition,we selected the plan with the most significant waste heat generation,and compared the environmental assessment before and after the implementation of this plan,to quantitatively analyze the cleaner production plan.

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